The Catholic Church has the fullness of truth and grace.

Many people who leave the Catholic Church are blessed by the experience of worshiping for a while in various Christian denominations. But some people come back when they realize that Catholicism has the fullness of truth and grace. The Catholic Church was not founded by a single reformer or historical movement. It is not fragmented by individual interpretations of Scripture. There are thousands of Christian denominations, but only one Catholic Church. This Church has been guided by the Holy Spirit and protected from teaching error on issues of faith and morals from generation to generation for some two thousand years. Our Lord Jesus promised: (foretold Isaiah 22:15-25) Matt 16:13-20; Matthew 18:15-18 (in this verse the word is church, not community); 1 Tim 3:15